... I don't know who did that change???, as the Sport Coupé is the 1968+ evolution of the Coupé, with new engine 903cc , 4 headlamps, and different rear shape ... so we will have to change all the 1965-67 ones again

I cleaned body types/categories for all 850 recently, and added missing accents, but I did not touch to the names (or I made a mistake by doing mass-replace for the accents... I hope that it was not that )
Note that for mass changes with simple rules (e.g. based on years as you said), I can do it quickly directly on the server, no need to change them one by one

The difference between coupe & coupé in the search is due to a change made when I upgraded the database two months ago or something like that. I think that I know how to fix the problem to make the search work as before, I just did not had time yet to do it
Anyway, I would say that for US cars it is "Coupe", but for Italian/Dutch/French cars it is "Coupé".